US20020121300A1 - Liquid fuel trap - Google Patents
Liquid fuel trap Download PDFInfo
- Publication number
- US20020121300A1 US20020121300A1 US09/795,365 US79536501A US2002121300A1 US 20020121300 A1 US20020121300 A1 US 20020121300A1 US 79536501 A US79536501 A US 79536501A US 2002121300 A1 US2002121300 A1 US 2002121300A1
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- US
- United States
- Prior art keywords
- fuel
- liquid
- housing
- tank
- liquid fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03519—Valve arrangements in the vent line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
- B60K2015/0344—Arrangements or special measures related to fuel tanks or fuel handling comprising baffles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
- B60K2015/03453—Arrangements or special measures related to fuel tanks or fuel handling for fixing or mounting parts of the fuel tank together
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
- B60K2015/03509—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems with a droplet separator in the vent line
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0753—Control by change of position or inertia of system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0753—Control by change of position or inertia of system
- Y10T137/0874—Vent opening or closing on tipping container
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0753—Control by change of position or inertia of system
- Y10T137/0923—By pendulum or swinging member
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2931—Diverse fluid containing pressure systems
- Y10T137/3003—Fluid separating traps or vents
- Y10T137/3084—Discriminating outlet for gas
- Y10T137/309—Fluid sensing valve
- Y10T137/3099—Float responsive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86292—System with plural openings, one a gas vent or access opening
- Y10T137/86324—Tank with gas vent and inlet or outlet
Definitions
- the present invention is in the field of vehicle fuel systems and more specifically it is concerned with a liquid fuel trap (at times referred to also as an expansion tank or an expansion canister).
- a liquid fuel trap at times referred to also as an expansion tank or an expansion canister.
- Vehicle fuel systems comprise, among others, a fuel tank fitted with a filler neck, a variety of fuel valves, a tubing for supplying fuel to the ignition system and a fuel vapor treating system (typically a carbon filter recovery system—canister) to which fuel vapor from the fuel tank flows and is then used for enriching the fuel mixture fed to the ignition system.
- a fuel vapor treating system typically a carbon filter recovery system—canister
- Fuel fluid in the form, of liquid, droplets, spray and vapor
- Fuel fluid flows via the one or more valves which are connected, via suitable tubing, to a liquid trap intermediate the fuel vapor recovery system, and the tank.
- the liquid trap receives fuel fluid flowing from the fuel tank which flow at a relatively high velocity owing to pressure and temperature changes, and thus vapor flowing from the fuel tank carries along with it also a considerable amount of fuel liquid in the form of droplets (as a result of venturi effect).
- the liquid trap entraps the fuel liquid and allows fuel vapor flow towards the vapor recovery system. The fuel liquid then returns back to the fuel tan, upon pressure decrease within the fuel tank.
- a liquid fuel trap is important in those cases where the various valves fitted within the tank are internally installed, i.e. do not project from an upper wall of the tank, where siphons may be generated at tubes connecting the valves to the liquid trap. Such siphons interfere with venting the tank on the one hand and, on the other hand, interfere with draining the devices.
- the present invention calls for a liquid fuel trap usable in a vehicle's fuel system, which liquid trap is adapted for fitting within the fuel tank and comprises a relief valve for spontaneously discharging liquid fuel into the fuel tank, when the pressure with fuel tank drops below a predetermined threshold.
- a liquid fuel trap device for a vehicle fuel tank die device comprising a housing formed with a confined space wide at least one inlet port connectable to a corresponding at least one fuel valve, an outlet port connectable to a fuel vapor recovery system and a fuel liquid discharge valve adapted for discharging liquid fuel from said space into the tank, the housing further comprising a connecting arrangement for attaching the device on an inner surface of an upper wall of the fuel tank.
- the liquid fuel trap device is typically made of an essentially impermeable material, though since the device is fitted for mounting within the fuel tank, this feature is not essential.
- the confined space of the housing comprises at least a well portion, said well portion being lowest within the confined space, where the liquid discharge valve is a check valve fitted at a bottom most portion thereof.
- the liquid discharge valve is a mushroom-type valve, and by another design is a spring-biased valve, such as, for example, a door-type valve, or a seat-type check valve.
- liquid flow from the at least one inlet port is prevented from direct flowing or splashing to the outlet port.
- a barrier member between the at least one inlet port and the outlet port.
- This effect may also be achieved by designing the at least one inlet port and the outlet port at different levels and axially diverted, i.e. not axially extending.
- the confined space may be formed with several unleveled chambers, where the inlet and outlet ports are fitted at different levels.
- the device is attached to the fuel tank by a securing member formed on the housing and adapted for snap engagement with a connecting extending from the upper wall of the fuel tank.
- the present invention calls also for a fuel system comprising a fuel tank, at least one fuel valve, a fuel recovery device and a liquid fuel trap device extending between the at least one fuel valves and the liquid trap device, said liquid trap device comprising a housing formed with a confined space with at least one inlet port connectable to the corresponding at least one fuel valve, an outlet port connectable to the fuel vapor recovery system, a fuel liquid discharge valve adapted for discharging liquid fuel from said space into the tank, and a connecting arrangement for attaching the device on an inner surface of an upper wall of the fuel tank.
- the device is attached to the fuel tank by a connecting member extending from the upper wall of the fuel tank, said connecting member adapted for snap-engagement with a corresponding securing member formed on the housing of the device.
- FIG. 1 is a schematic presentation illustrating a fuel system fitted with an liquid fuel trap according to the present invention
- FIG. 2 is an isometric view of the liquid trap in accordance with the invention.
- FIG. 3 is a bottom isometric view of the device seen in FIG. 2, partially exploded so as to visualize a discharge valve thereof;
- FIG. 4 is an isometric view of the liquid trap in accordance with the invention, partially sectioned so as to visualize a barrier wall in the confined space;
- FIG. 5 is a local section of a base portion of the housing of the fuel trap, illustrating a mushroom-type discharge valve
- FIG. 6 is a local section of a base portion of the housing of the fuel trap, illustrating a spring biased type discharge valve
- FIG. 7 illustrates still another embodiment of a discharge valve for use in a liquid trap according to lie present invention.
- FIG. 1 is a schematic illustration of a vehicle's fuel system generally designated 10 comprising several elements which are schematically illustrated, namely a fuel tank 12 fitted with a fuelling pipe 14 , several valves 16 and 18 , e.g. a roll-over valve, over-filling interdiction valve and a variety of other valves are possible, as known per se.
- the valves 16 and 18 are connected via suitable tubing 20 and 21 to a liquid fuel trap in accordance with the present invention generally designated 30 connected at 32 to an inside surface of an upper wall 34 of the fuel tank 12 . It is desired to avoid formation of siphons in the tubes extending to an from the device, as such siphons interfere with venting the tank on the one hand and, on the other hand, interfere with draining the devices.
- a pipe 36 Extending from the liquid fuel trap 30 there is a pipe 36 extending to a fuel vapor recovery system 40 , typically a carbon fuel treating device known as “a canister”.
- a fuel vapor recovery system 40 typically a carbon fuel treating device known as “a canister”.
- the device 30 comprises a housing 33 formed with an upper chamber 34 and a lower, well-like chamber 36 which together define a confined space 38 .
- the lower chamber 36 is fitted with an inlet nipple 44 constituting a first inlet port connected by tube 80 to a valve 18 (see FIG. 1) and the upper chamber 34 is fitted with a second inlet nipple 48 constituting a second inlet port connectable via tube 20 to valve 16 (see FIG. 1).
- die upper chamber 34 comprises a barrier wall 52 extending opposite the second inlet 48 thus preventing liquid from splashing from the inlet directly towards the outlet 50 and rather forcing it to flow into well-like chamber 36 where it will accumulate and discharge into the fuel tank by gravity through a discharge valve 60 and a lowermost portion of the lower chamber 36 .
- the discharge valve 60 is a one-way mushroom-type valve comprising a flexible mushroom-like diaphragm member 62 formed with a stem portion 64 snapingly received within a suitable receptacle 66 at a base wall 68 of the lower chamber 36 . Liquid accumulating above the flexible diaphragm will eventually cause it to deform and discharge the liquid into the fuel tank.
- FIG. 6 Another embodiment of a discharge valve is illustrated in FIG. 6 wherein the bottom wall 68 of the lower chamber 36 accommodates a one-way valve 70 comprising a closure member 72 biased by coiled spring 74 into sealing engagement of the apertures 78 formed in wall 68 , with a sealing gasket 73 provided for improved sealing engagement.
- the closing member 72 will displace to an open position, overcoming the force of coil spring 74 upon accumulation of a predetermined amount of fuel liquid within the chamber 36 and upon decrease of pressure within the fuel tank.
- FIG. 7 illustrates another options for a discharge valve suitable for use in a liquid trap according to the present invention.
- the discharge valve is a door like closure designated 75 , pivotally connected at 77 to the lower wall of the housing of the device arid being biased by spring 76 into sealing engagement, there being a gasket seal 78 for improved sealing
- the housing 33 of the device 30 comprises a ring-like member 76 integrally formed with the housing 33 and adapted for snap engagement with a cylindrical stem member 32 (see FIG. 1) attached to a top wall surface 34 of fuel tank 12 , e.g. by welding surface 78 or by other connecting methods desirably being non-permeable attachment means.
- stem member 32 should be as short as possible, so as to ensure the device is installed as high as possible within the tank.
- this is only an embodiment for connecting the device within the tank. Other connecting options are possible too, setting as an example the arrangement disclosed in WO 01/07806.
Abstract
Description
- The present invention is in the field of vehicle fuel systems and more specifically it is concerned with a liquid fuel trap (at times referred to also as an expansion tank or an expansion canister).
- Vehicle fuel systems comprise, among others, a fuel tank fitted with a filler neck, a variety of fuel valves, a tubing for supplying fuel to the ignition system and a fuel vapor treating system (typically a carbon filter recovery system—canister) to which fuel vapor from the fuel tank flows and is then used for enriching the fuel mixture fed to the ignition system.
- Fuel fluid (in the form, of liquid, droplets, spray and vapor) from the fuel tank flows via the one or more valves which are connected, via suitable tubing, to a liquid trap intermediate the fuel vapor recovery system, and the tank.
- The liquid trap receives fuel fluid flowing from the fuel tank which flow at a relatively high velocity owing to pressure and temperature changes, and thus vapor flowing from the fuel tank carries along with it also a considerable amount of fuel liquid in the form of droplets (as a result of venturi effect). The liquid trap entraps the fuel liquid and allows fuel vapor flow towards the vapor recovery system. The fuel liquid then returns back to the fuel tan, upon pressure decrease within the fuel tank.
- A liquid fuel trap is important in those cases where the various valves fitted within the tank are internally installed, i.e. do not project from an upper wall of the tank, where siphons may be generated at tubes connecting the valves to the liquid trap. Such siphons interfere with venting the tank on the one hand and, on the other hand, interfere with draining the devices.
- It is an object of the present invention to provide a liquid trap for a vehicle's fuel system, which expansion tank is made of a plastic material and is adapted for fitting within the fuel tank.
- The present invention calls for a liquid fuel trap usable in a vehicle's fuel system, which liquid trap is adapted for fitting within the fuel tank and comprises a relief valve for spontaneously discharging liquid fuel into the fuel tank, when the pressure with fuel tank drops below a predetermined threshold.
- According to the present invention there is provided a liquid fuel trap device for a vehicle fuel tank, die device comprising a housing formed with a confined space wide at least one inlet port connectable to a corresponding at least one fuel valve, an outlet port connectable to a fuel vapor recovery system and a fuel liquid discharge valve adapted for discharging liquid fuel from said space into the tank, the housing further comprising a connecting arrangement for attaching the device on an inner surface of an upper wall of the fuel tank.
- The liquid fuel trap device is typically made of an essentially impermeable material, though since the device is fitted for mounting within the fuel tank, this feature is not essential.
- According to one particular embodiment, the confined space of the housing comprises at least a well portion, said well portion being lowest within the confined space, where the liquid discharge valve is a check valve fitted at a bottom most portion thereof.
- The liquid discharge valve, according to one design, is a mushroom-type valve, and by another design is a spring-biased valve, such as, for example, a door-type valve, or a seat-type check valve.
- According to an embodiment of the invention, liquid flow from the at least one inlet port is prevented from direct flowing or splashing to the outlet port. By one specific design there is a barrier member between the at least one inlet port and the outlet port. This effect may also be achieved by designing the at least one inlet port and the outlet port at different levels and axially diverted, i.e. not axially extending. Thus, the confined space may be formed with several unleveled chambers, where the inlet and outlet ports are fitted at different levels.
- The device, according to one design, is attached to the fuel tank by a securing member formed on the housing and adapted for snap engagement with a connecting extending from the upper wall of the fuel tank.
- The present invention calls also for a fuel system comprising a fuel tank, at least one fuel valve, a fuel recovery device and a liquid fuel trap device extending between the at least one fuel valves and the liquid trap device, said liquid trap device comprising a housing formed with a confined space with at least one inlet port connectable to the corresponding at least one fuel valve, an outlet port connectable to the fuel vapor recovery system, a fuel liquid discharge valve adapted for discharging liquid fuel from said space into the tank, and a connecting arrangement for attaching the device on an inner surface of an upper wall of the fuel tank.
- According to a specific design, the device is attached to the fuel tank by a connecting member extending from the upper wall of the fuel tank, said connecting member adapted for snap-engagement with a corresponding securing member formed on the housing of the device.
- In order to better understand the invention and to see how it may be carried out in practice, reference will now be made to the accompanying drawings, by way of example only in which:
- FIG. 1 is a schematic presentation illustrating a fuel system fitted with an liquid fuel trap according to the present invention;
- FIG. 2 is an isometric view of the liquid trap in accordance with the invention;
- FIG. 3 is a bottom isometric view of the device seen in FIG. 2, partially exploded so as to visualize a discharge valve thereof;
- FIG. 4 is an isometric view of the liquid trap in accordance with the invention, partially sectioned so as to visualize a barrier wall in the confined space;
- FIG. 5 is a local section of a base portion of the housing of the fuel trap, illustrating a mushroom-type discharge valve;
- FIG. 6 is a local section of a base portion of the housing of the fuel trap, illustrating a spring biased type discharge valve; and
- FIG. 7 illustrates still another embodiment of a discharge valve for use in a liquid trap according to lie present invention.
- Whilst some embodiments have been described and illustrated with reference to some drawings, the artisan, will appreciate that many variations are possible which do not depart from the general scope of the invention, mutatis mutandis.
- FIG. 1 is a schematic illustration of a vehicle's fuel system generally designated10 comprising several elements which are schematically illustrated, namely a
fuel tank 12 fitted with afuelling pipe 14,several valves valves suitable tubing upper wall 34 of thefuel tank 12. It is desired to avoid formation of siphons in the tubes extending to an from the device, as such siphons interfere with venting the tank on the one hand and, on the other hand, interfere with draining the devices. - Extending from the
liquid fuel trap 30 there is apipe 36 extending to a fuelvapor recovery system 40, typically a carbon fuel treating device known as “a canister”. - Further reference is now made to FIGS.2 to 4 for understanding the specific construction of a
liquid fuel trap 30 in accordance with the present invention. Thedevice 30 comprises ahousing 33 formed with anupper chamber 34 and a lower, well-like chamber 36 which together define a confinedspace 38. Thelower chamber 36 is fitted with aninlet nipple 44 constituting a first inlet port connected by tube 80 to a valve 18 (see FIG. 1) and theupper chamber 34 is fitted with asecond inlet nipple 48 constituting a second inlet port connectable viatube 20 to valve 16 (see FIG. 1). Connected at an opposite side of theupper chamber 34 there is anoutlet nipple 50 connected viatube 36 to the vapor treating device 40 (see FIG. 1). - As can be seen in FIG. 4, die
upper chamber 34 comprises abarrier wall 52 extending opposite thesecond inlet 48 thus preventing liquid from splashing from the inlet directly towards theoutlet 50 and rather forcing it to flow into well-like chamber 36 where it will accumulate and discharge into the fuel tank by gravity through adischarge valve 60 and a lowermost portion of thelower chamber 36. - By one particular embodiment, illustrated in FIGS. 3 and 5, the
discharge valve 60 is a one-way mushroom-type valve comprising a flexible mushroom-like diaphragm member 62 formed with astem portion 64 snapingly received within asuitable receptacle 66 at abase wall 68 of thelower chamber 36. Liquid accumulating above the flexible diaphragm will eventually cause it to deform and discharge the liquid into the fuel tank. - Another embodiment of a discharge valve is illustrated in FIG. 6 wherein the
bottom wall 68 of thelower chamber 36 accommodates a one-way valve 70 comprising aclosure member 72 biased by coiledspring 74 into sealing engagement of theapertures 78 formed inwall 68, with a sealinggasket 73 provided for improved sealing engagement. Theclosing member 72 will displace to an open position, overcoming the force ofcoil spring 74 upon accumulation of a predetermined amount of fuel liquid within thechamber 36 and upon decrease of pressure within the fuel tank. - The embodiment of FIG. 7 illustrates another options for a discharge valve suitable for use in a liquid trap according to the present invention. The discharge valve is a door like closure designated75, pivotally connected at 77 to the lower wall of the housing of the device arid being biased by
spring 76 into sealing engagement, there being agasket seal 78 for improved sealing - Reverting now to FIGS.2 to 4, it is noted that the
housing 33 of thedevice 30 comprises a ring-like member 76 integrally formed with thehousing 33 and adapted for snap engagement with a cylindrical stem member 32 (see FIG. 1) attached to atop wall surface 34 offuel tank 12, e.g. bywelding surface 78 or by other connecting methods desirably being non-permeable attachment means. Preferably,stem member 32 should be as short as possible, so as to ensure the device is installed as high as possible within the tank. However, this is only an embodiment for connecting the device within the tank. Other connecting options are possible too, setting as an example the arrangement disclosed in WO 01/07806.
Claims (18)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/795,365 US6557581B2 (en) | 2001-03-01 | 2001-03-01 | Liquid fuel trap |
AU2002232088A AU2002232088A1 (en) | 2001-03-01 | 2002-02-13 | Liquid fuel trap |
PCT/IL2002/000110 WO2002070295A2 (en) | 2001-03-01 | 2002-02-13 | Liquid fuel trap |
DE10296418.1T DE10296418B4 (en) | 2001-03-01 | 2002-02-13 | A liquid fuel |
GB0320269A GB2389351B (en) | 2001-03-01 | 2002-02-13 | Liquid fuel trap |
US10/241,532 US6860285B2 (en) | 2001-03-01 | 2002-09-12 | Liquid fuel trap |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/795,365 US6557581B2 (en) | 2001-03-01 | 2001-03-01 | Liquid fuel trap |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IL2002/000110 Continuation-In-Part WO2002070295A2 (en) | 2001-03-01 | 2002-02-13 | Liquid fuel trap |
Publications (2)
Publication Number | Publication Date |
---|---|
US20020121300A1 true US20020121300A1 (en) | 2002-09-05 |
US6557581B2 US6557581B2 (en) | 2003-05-06 |
Family
ID=25165336
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/795,365 Expired - Lifetime US6557581B2 (en) | 2001-03-01 | 2001-03-01 | Liquid fuel trap |
US10/241,532 Expired - Lifetime US6860285B2 (en) | 2001-03-01 | 2002-09-12 | Liquid fuel trap |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/241,532 Expired - Lifetime US6860285B2 (en) | 2001-03-01 | 2002-09-12 | Liquid fuel trap |
Country Status (5)
Country | Link |
---|---|
US (2) | US6557581B2 (en) |
AU (1) | AU2002232088A1 (en) |
DE (1) | DE10296418B4 (en) |
GB (1) | GB2389351B (en) |
WO (1) | WO2002070295A2 (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6520200B1 (en) * | 2001-08-16 | 2003-02-18 | Delphi Technologies, Inc. | Liquid/vapor separator assembly for fuel tank |
US20030127134A1 (en) * | 2002-01-08 | 2003-07-10 | Eaton Corporation. | Controlling fuel vapor venting in a fuel tank |
US20030205272A1 (en) * | 2002-05-02 | 2003-11-06 | Eaton Corporation | Method of venting fuel vapor from a tank and system therefor |
DE10252506A1 (en) * | 2002-11-08 | 2004-05-27 | Siemens Ag | Ventilation device for a fuel tank of a motor vehicle |
WO2005042291A3 (en) * | 2003-10-31 | 2005-07-14 | Tesma Motoren Getriebetechnik | Fuel container with ventilation system |
WO2006064493A1 (en) * | 2004-12-16 | 2006-06-22 | Raval A.C.S. Ltd. | Vapor recovery control valve |
FR2900091A1 (en) * | 2006-04-21 | 2007-10-26 | Inergy Automotive Systems Res | PROCESS FOR THE MANUFACTURE OF A FUEL TANK OF PLASTIC MATERIAL |
EP1862664A2 (en) * | 2006-05-31 | 2007-12-05 | GM Global Technology Operations, Inc. | Mushroom valve |
WO2008012272A1 (en) * | 2006-07-28 | 2008-01-31 | Gm Global Technology Operations, Inc. | Liquid container |
WO2008027061A1 (en) | 2006-08-31 | 2008-03-06 | Continental Automotive Systems Us, Inc. | Valve seal structure for reservoir of a fuel delivery module |
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DE10063389A1 (en) * | 2000-12-19 | 2002-06-20 | Daimler Chrysler Ag | Ventilation and pressure balancing system for vehicle fuel tank comprises ventilation pipes and trap for liquid fuel fitted at point where these connect which has recirculation pipe leading back into tank |
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WO2016160782A1 (en) * | 2015-03-29 | 2016-10-06 | Eaton Corporation | Fuel system having vent point valve |
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US6520200B1 (en) * | 2001-08-16 | 2003-02-18 | Delphi Technologies, Inc. | Liquid/vapor separator assembly for fuel tank |
US20030034069A1 (en) * | 2001-08-16 | 2003-02-20 | Lawrukovich Michael Paul | Liquid/vapor separator assembly for fuel tank |
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US20090166367A1 (en) * | 2006-04-21 | 2009-07-02 | Inergy Automotive Systems Research(Societeanonyme) | Method for manufacturing a plastic fuel tank |
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US8376180B2 (en) * | 2006-07-12 | 2013-02-19 | Raval A.C.S. Ltd. | Venting tubing system for a fuel tank |
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US20120160220A1 (en) * | 2010-12-21 | 2012-06-28 | Audi Ag | Device for ventilating and aerating a fuel tank |
FR2980407A1 (en) * | 2011-09-26 | 2013-03-29 | Eurocopter France | FUEL STORAGE SYSTEM, AND VEHICLE |
EP2572919A1 (en) | 2011-09-26 | 2013-03-27 | Eurocopter | Fuel storage system and vehicle |
US20160222923A1 (en) * | 2012-08-20 | 2016-08-04 | Raval A.C.S. Ltd. | Vehicle Fuel Accessory |
US10465634B2 (en) * | 2012-08-20 | 2019-11-05 | Raval A.C.S. Ltd. | Vehicle fuel accessory |
US9623980B2 (en) | 2012-11-19 | 2017-04-18 | Airbus Helicopters | Fuel storage device, an aircraft, and a method |
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US20150021907A1 (en) * | 2013-07-22 | 2015-01-22 | Tokai Rubber Industries, Ltd. | Fuel line joint |
US9797354B2 (en) * | 2013-07-22 | 2017-10-24 | Tokai Rubber Industries, Ltd. | Fuel line joint |
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US10183574B2 (en) | 2013-12-09 | 2019-01-22 | Raval A.C.S. Ltd. | Draining device |
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US10086690B2 (en) | 2014-09-29 | 2018-10-02 | Raval A.C.S. Ltd. | Draining arrangement |
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CN110962587A (en) * | 2018-09-28 | 2020-04-07 | 丰田合成株式会社 | Fuel tank opening and closing device |
Also Published As
Publication number | Publication date |
---|---|
US6860285B2 (en) | 2005-03-01 |
WO2002070295A2 (en) | 2002-09-12 |
US6557581B2 (en) | 2003-05-06 |
GB2389351B (en) | 2004-05-19 |
WO2002070295A3 (en) | 2003-01-09 |
DE10296418B4 (en) | 2014-09-18 |
DE10296418T5 (en) | 2004-04-15 |
GB2389351A (en) | 2003-12-10 |
AU2002232088A1 (en) | 2002-09-19 |
US20030079775A1 (en) | 2003-05-01 |
GB0320269D0 (en) | 2003-10-01 |
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